Pourriez-vous corriger les fautes de grammaire et d'orthographe dans ce texte en anglais Merci.

My name is Jack. I'm a detective
My investigate :
I must solve this case. The victim is Michael Obamas. He had twenty one years old. He was watchman in chief of the Statue of Liberty. Michael was killed on the Statue of Liberty. He was strangled on Friday, November thirteen between six and eight am. This is clues: a bloodstain, fingerprints, footprints, a rope, and a surveillance camera.
I was questioning three suspects.
"- Robin Obamas, where were you between six and eight am? Asked the detective. - I was in the Statue of Liberty, because I was working, answered Robin. -Did you see or heard something? Said Jack. - I didn't see anything, but I heard Michael leaving around five am. Added the suspect. -Good, hummm, Katy Perra, what were you doing this morning? Questioned Jack. -I was doing my job, I'm a cleaning lady for the Statue of Liberty. I heard someone screaming and I saw Robin it strange to see him there Friday his a day of rest. Said Katy. -Ok, What about you Jean? Asked Jack. - I was cheek an electric system, I didn't see anything but I heard a door creaking. Declared Jean."
I thought the murderer was Robin Obamas. His alibi's wasn't correct. Katy said "Friday his a day of rest". The Friday, Robin didn't go on the Statue of Liberty, but this morning he was here. And his fingerprints were matching with the fingerprints founded on the crime scene. "-Robin why have you kill your son ? Questioning Jack. -Because my dad to name my Michael watchman in chief of the Statue of Liberty and not me. Confessed Robin "
My colleague took him to prison. Michael Obamas was killed by his dad Robin Obamas.